Ball-bearing.



M. GOHLKE.

BALL BEARING.

APPLIOATION FILED Arg. 2e, 1912.

y v Patented July 28, 1914.

y um E l v MAX GoHLKE, oF PANKow, NEAR BERLIN, GERMANY.

BALL-BEARING.

y Specification of Letters Patent.

Patented July 2s, 1914.

Application led April 26, 1912. Serial No. 693,342.

To all 4lo/02nit may concern Be it known that l. Max GoliLkE, engineer, a subject of the King of Prussia, residing at No. 5/6 Florastrasse, lanko'w, near Berlin, Germany, have invented certain new and useful Improvements in Ball-Bearings; and I do hereby declare the following to be a full, clear. and exact description of the invention, suoli as will enable others skilled in the art`to which it appertains to make and use the same.

This inventio-n relates to a ball bearing of the kind in which all the parts of the bearing are arranged in a bush which is fixed in a frame socket.

The present invention consists in an improved method of fixing the bush in the frame socket which affords a secure hold for the bush and for the. fixing member itself and which permits of readily and easily loosening.

In accordance with the invention the hub bush is held in thesocket by means of a split ring, the clamping action of which is regulated by means of a set screw with a conical head while simultaneously the pressure of the split ring secures this set screw.

' The novel method of fixing isillustrated as applied tothe bottom bracket` of a velocipede in the accompanying drawing, in

which Figure l shows the bearing as a whole in longitudinal section. Fig. 2 is an elevation thereof, and Fig. 3 is a vertical cross section.

As regards the general arrangement of the bearing illustrated two normal ball bearings .a a2 are arranged inside the hub bush their outer and inner hall races being held at the proper distance apart in the bush by the intermediate sleeves f g which are supplemented by a. partitionV It soj as to form an oil trough. The inner ball race rings andV the intermediate sleeve g are pQressed together bythe inner clamping disks c and CZ, the latter of which is screwed onto the crank shaft w while the outer ball rings of the `bearing, including the out-er intermediate sleeve f, are held by the outer clamping disks i lc which are screwed into the hub bush on either side. In order to make the bearing oil and dust-tight, the adjacent inner and outer clamping disks c z' and (l 7c respectively overlap each other and between the disks and the corresponding ball race ring inter- Amediate disk l 0 and m 79 respectively are t with conical head u is inserted in the split ring; it is screwed into the outer intermediate sleeve f where 1t 1s provided with a reinforcement o. The pin or screw t 1s screwed in to such an extent that its conical headu spreads the split ring while the pin or screw itself is secured from unintentional loosening by the re-action of the ring.

The bearing is assembled inthe following manner: The hub bush is inserted in the frame socket until theperforations register, whereupon the split ring is inserted and the pin or screw introduced through the split ring. Now if the pin is screwed into the thread provided in the intermediate sleeve f its conical head u spreads the ring s so that l1t is no longer possible for the bush a. to

shift in the socket r but these parts are completely secured from loosening by shocks or vibration. As the spilt ring clamps the conical head of the pin or screw the latter is also secured from unintentional loosening. What- I claim and desire to secure by Letters Patent of the United States is In abicycle bearing, the combination of inner and outer concentric ball race rings, a distance sleeve between said outer ball race rings adapted to hold said ball race rings apart, a bushing surrounding said distance sleeve and said ball race rings, a frame socket. adapted to receive said bushing. corresponding cylindrical perforations in said against' the cylindrical Walls of said pei"- frame socket and said bushing, a pin screwed forations. 10 into said distance sleeve through said perfo- In testimony whereof, I have aiixed my rations and having a conical head, and a signature, in presence of two Witnesses.

split ring having a cylindrical outer face MAX GOHLKE.

and a conical inner face and adapted to he lVtneSses:

inserted in said perfoi'atons and to be HENRY HASPER,

pressed by said conical head of said pin WOLDEMAR HAUPT. 

